Overview

overview

10

Static

static

3

cryptolaemus

windows10-2004-x64

10

cryptolaemus

windows11-21h2-x64

10

Sharing

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General

  • Target

    c36fbe6dd8f9632176f3927fca2c2e674a5929d33e7d245f1053bf69ec2b11a9

  • Size

    379KB

  • Sample

    240909-vb1h3sygjm

  • MD5

    95b628b19f244451d5f69a864e24b260

  • SHA1

    a478f681098713f959d89361c09c14d02552e6ed

  • SHA256

    c36fbe6dd8f9632176f3927fca2c2e674a5929d33e7d245f1053bf69ec2b11a9

  • SHA512

    f2755be22ecdb5aa22ac741fd4bb4d1f1fded762106dd04e6926771ba2ceb19414228fab882b609504ece92583084634ff10b1febdcecd26ac70ac40a1aa7caa

  • SSDEEP

    3072:V8XBk++uc5jv/MfYABOMHfa80LxDtamgthsGiOTBILGvmYX0ZSZn0YTwsu9f:mBknHMfYAB1aLLMhsdOdILGmM92f

Score
10/10
tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Targets

    • Target

      c36fbe6dd8f9632176f3927fca2c2e674a5929d33e7d245f1053bf69ec2b11a9

    • Size

      379KB

    • MD5

      95b628b19f244451d5f69a864e24b260

    • SHA1

      a478f681098713f959d89361c09c14d02552e6ed

    • SHA256

      c36fbe6dd8f9632176f3927fca2c2e674a5929d33e7d245f1053bf69ec2b11a9

    • SHA512

      f2755be22ecdb5aa22ac741fd4bb4d1f1fded762106dd04e6926771ba2ceb19414228fab882b609504ece92583084634ff10b1febdcecd26ac70ac40a1aa7caa

    • SSDEEP

      3072:V8XBk++uc5jv/MfYABOMHfa80LxDtamgthsGiOTBILGvmYX0ZSZn0YTwsu9f:mBknHMfYAB1aLLMhsdOdILGmM92f

    Score
    10/10
    tofseediscoveryevasionexecutionpersistenceprivilege_escalationtrojan

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

      trojantofsee

    • Creates new service(s)

      persistenceexecution

    • Modifies Windows Firewall

      evasion

    • Sets service image path in registry

      persistence

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks